Running Length Web Patents (Class 156/164)
-
Patent number: 5496428Abstract: A process for making a wearable, absorbent article is described wherein two longitudinally extending barrier leg cuffs are attached to a chassis and the barrier leg cuffs are joined to the article so that they are directed inwardly toward a longitudinally extending centerline in the first waist region of the article and directed outwardly away from the longitudinally extending centerline in the second waist region of the article. The method describes the cuffs as being first attached in the first waist region and then in the second waist region in one embodiment and, in another embodiment, being attached in the second waist region first and then in the first waist region of the article.Type: GrantFiled: June 16, 1994Date of Patent: March 5, 1996Assignee: The Procter & Gamble CompanyInventors: David M. Sageser, Stanley G. Juergens, Mark D. Midkiff
-
Patent number: 5474635Abstract: A method of joining adjacent, non-coplanar, fiber reinforced composite structures includes machining a plurality of serrations (4) into an edge (6) of a consolidated first fiber reinforced composite structure (2) such that reinforcing fibers continue from a main body (14) of the first fiber reinforced composite structure (2) into the serrations (4). One or more reinforcing fiber plies (16) are then laid up around the serrations (4) to form an unconsolidated second structure such that the serrations (4) protrude through at least one reinforcing fiber ply (16). In addition to the one or more reinforcing fiber plies (16), the unconsolidated second structure also includes a matrix precursor. Sufficient heat and pressure are applied to the unconsolidated second structure and the serrations (4) to consolidate the second structure into a fiber reinforced composite structure (8).Type: GrantFiled: March 7, 1994Date of Patent: December 12, 1995Assignee: United Technologies CorporationInventors: Bernarr A. Jacob, John E. Holowczak, Philip H. McCluskey, Willard H. Sutton
-
Patent number: 5470647Abstract: The invention concerns a compressible prepreg based on flat substrates impregnated with thermosetting synthetic resins, characterized in that it comprises a first, C stage synthetic-resin layer directly deposited on the substrate and a second, B stage synthetic-resin layer deposited on the first synthetic-resin layer.Type: GrantFiled: January 5, 1994Date of Patent: November 28, 1995Assignee: Isovolta Osterreichische Isolierstoffwerke AktiengesellschaftInventors: Bela Zimics, Willibald Orthofer
-
Patent number: 5458721Abstract: A laminate is made by applying a plurality of parallel fine lines of adhesive to a first web, intermittently agitating the adhesive prior to deposition to intermingle the adhesive to form spaced apart bands extending across the fine lines, and then applying a second web over the adhesive to join the webs together. The intermittent cross bands prevent migration of particles and leakage along said fine lines. When diapers are made from the laminate, waistbands are formed in the areas of the cross bands. Apparatus is disclosed.Type: GrantFiled: September 22, 1994Date of Patent: October 17, 1995Assignee: Nordson CorporationInventor: John Raterman
-
Patent number: 5439459Abstract: An arrangement of a disposable diaper in which there are provided elastic members extending not only along opposite side edges of an opening formed in a skin-contacting topsheet but also further extending beyond longitudinally opposite ends of the opening substantially to longitudinally opposite ends of the skin-contacting topsheet so that the opening may sufficiently rise up together with the skin-contacting topsheet to assure reliable introduction of excretions through this opening into a pocket space defined between the skin-contacting topsheet and a separately provided topsheet underlying the skin-contacting topsheet.Type: GrantFiled: April 19, 1993Date of Patent: August 8, 1995Assignee: Uni-Charm CorporationInventors: Hiroyuki Tanji, Ichiro Wada, Yoshio Ono, Hiroyuki Soga
-
Patent number: 5431991Abstract: The invention provides elastic fabrics which are substantially non-extensible in the machine direction and have substantial elastic properties in the cross-machine direction. The process stable fabrics of the invention include a net and a fibrous layer which are secured together. The net is composed of a plurality of continuous machine direction strands and a plurality of cross-direction strands. The machine direction strands are substantially non-extensible and the cross-direction strands are substantially elastic. The fabrics of the invention can be manufactured and processed more readily than fabrics which are elastic in both the machine direction and the cross-machine direction.Type: GrantFiled: September 17, 1993Date of Patent: July 11, 1995Assignee: Fiberweb North America, Inc.Inventors: Thomas E. Quantrille, Jared A. Austin, Scott L. Gessner
-
Patent number: 5429694Abstract: Apparatus for applying tensioned elastic to material including a first conveyor for carrying material in one direction along a flow path, a second conveyor operable to draw elastic from a storage container, tension the elastic, and move the elastic longitudinally in a tensioned state along a region extending transversely of and spaced from the first conveyor flow path, and a pair of transfer grippers. The transfer grippers are movable along a path in the direction of the flow path and are positioned to grasp spaced regions of elastic held by the second conveyor. Cutters are positioned laterally outwardly of the grippers to sever elastic from the second conveyor after being grasped by the grippers. The grippers maintain the elastic in a tensioned condition and deposit on the material. Also disclosed is a method for applying tensioned elastic to material, generally as described above in relation to the apparatus.Type: GrantFiled: April 5, 1994Date of Patent: July 4, 1995Assignee: Paragon Trade Brands, Inc.Inventor: Thomas R. Herrmann
-
Patent number: 5413654Abstract: Here are disclosed disposable garments such as diaper and training pants and a method for attachment of threadlike continuous elastic members (each comprising a plurality of threadlike elastic elements) around leg-holes thereof so that the elastic members are progressively widened from their longitudinally opposite ends toward their longitudinally middle portions, respectively.The threadlike continuous elastic members 4A, 4B thus attached to the article around th respective leg-holes each comprises rubber threads 4a, 4b, 4c. The traverse, arrangement support these rubber threads in parallel to one another and forcibly guide them in sine curves with respect to the continuous web 7 so that the portions 4A.sub.1, 4B.sub.1 of the elastic members 4A, 4B to be bonded to the continuous web are bonded thereto. Then, the non-bonded portions 4A2, 4B2 of the elastic members are cut together with the web 7 along boundaries of the individual articles and thereupon contract under their own stretch stresses.Type: GrantFiled: June 2, 1994Date of Patent: May 9, 1995Assignee: Uni-Charm CorporationInventors: Takamitsu Igaue, Hironori Nomura, Hirofumi Ohnishi, Yoshinori Matsura, Tohru Sasaki, Taiji Shimakawa, Hiroki Yamamoto
-
Patent number: 5413811Abstract: There is provided a method of softening a nonwoven web by wetting a nonwoven web having a starting, unstretched width and a starting cup crush value, with an aqueous solution of softening chemicals, necking the saturated nonwoven web, drying the nonwoven web at a temperature and time sufficient to remove at least 95 percent of the moisture from the nonwoven web, wherein the web has a final cup crush value which is less than 50 percent of the starting cup crush value. The method may optionally include the step of un-necking the nonwoven web to about between 80 and 125 percent of its starting, unstretched width.Type: GrantFiled: March 18, 1994Date of Patent: May 9, 1995Assignee: Kimberly-Clark CorporationInventors: Steven W. Fitting, John J. Sayovitz, Joel E. Edwards, Gregory T. Sudduth
-
Patent number: 5411618Abstract: A method and apparatus for making diapers wherein spaced apart moisture pervious webs are applied to fluff pads and overlaid with a further moisture pervious web which permits further processing prior to adhesively sandwiching a waistband between the further web and an underlying moisture impervious web.Type: GrantFiled: November 24, 1993Date of Patent: May 2, 1995Assignee: Paper Converting Machine CompanyInventor: Frank F. Jocewicz, Jr.
-
Patent number: 5407507Abstract: A method and apparatus for stretching an elastic member in cross machine direction and combining the elastic member, while held in tension, with a moving substrate web. A web of unstretched material, having elasticity across the direction of metering, is fed onto a first rotating drum at a speed slower than the surface speed of the drum. A cutter roll severs a portion of the unstretched material from its leading edge. Vacuum grippers in a drum slot beneath the elastic member support the ends of the member when it is cut from the web. Sealing dies are mounted to the surface of the vacuum grippers below the ends of the elastic member. As the first drum rotates further, the vacuum grippers are cammed axially outward within the slot to stretch the elastic member. Meanwhile, a substrate web is metered onto a second drum which rotates at the same surface speed as the first drum. The second drum rotates against the first drum but in the opposite direction.Type: GrantFiled: October 25, 1993Date of Patent: April 18, 1995Assignee: The Procter & Gamble CompanyInventor: Walter K. Ball
-
Patent number: 5393599Abstract: The invention provides elastic fabrics which exhibit low extensibility in the machine direction and have substantial elastic properties in the cross-machine direction. The fabrics of the invention include an elastic layer and a fibrous layer which are combined together. The fibrous layer is composed of a plurality of thermally activated binder fibers or filaments oriented substantially in the machine-direction of the fibrous web. The fabrics of the invention can be manufactured and processed more readily than fabrics which are elastic in both the machine direction and the cross-machine direction.Type: GrantFiled: July 23, 1993Date of Patent: February 28, 1995Assignee: Fiberweb North America, Inc.Inventors: Thomas E. Quantrille, G. Stanley Zimmerman, Jr.
-
Patent number: 5389168Abstract: A method of making an elastomeric, hot-melt adhesive foam is disclosed. The method involves melting an adhesive material, mixing a gas with the adhesive material under pressure to form a solution of the gas in the adhesive material, reducing the pressure to cause evolution and/or expansion of the gas to form a foam, and stabilizing the foam by causing the adhesive material to solidify. The relatively low melt-viscosity of the adhesive material which is used to form the foam provides desirable processing times and the ability to form foams having desired physical properties, e.g., caliper and cell structure.Type: GrantFiled: June 30, 1993Date of Patent: February 14, 1995Assignee: The Procter & Gamble CompanyInventors: John J. Litchholt, Richard W. Lodge
-
Patent number: 5389173Abstract: Apparatus for producing disposable diaper type products such as diapers per se and training pants in which leg elastic strands are captured between a pair of webs which are thereafter united with a fluff pad-equipped web and wherein guide members are employed for traversing the elastic strands to abut leg openings in the diaper type product.Type: GrantFiled: October 4, 1993Date of Patent: February 14, 1995Assignee: Paper Converting Machine CompanyInventors: John R. Merkatoris, Gary E. Johnson
-
Patent number: 5382467Abstract: The present invention relates to a resilient body which includes two thin layers (1, 6) of flexible material to which intermediate elastic threads (2, 3, 5) or bands are fastened in a stretched state and disposed in a regular, net-like pattern, and bodies (4) of soft material are disposed between the two layers (1, 6) in at least some of the meshes of the net formed by the elastic threads. These bodies have smaller dimensions than the meshes, so as to permit total or partial contraction of the stretched or tensioned elastic threads. The bodies also have an intrinsic stiffness such as to substantially retain their shape upon contraction of the elastic threads. The invention also relates to a method for manufacturing the inventive resilient body.Type: GrantFiled: June 22, 1992Date of Patent: January 17, 1995Assignee: Molnlycke ABInventors: Urban Widlund, Roy Hansson
-
Patent number: 5376198Abstract: The method comprises the steps of providing a liquid-pervious bodyside layer, a liquid-impervious outer layer, a stretchable layer, and an absorbent layer; forming the layers into a configuration designed generally to fit conformably to the body; stretching the stretchable layer; bonding the stretched stretchable layer to the other layer; releasing the bonded layer; and forming a plurality of rugosities in the bodyside layer, outer layer, and absorbent layer upon relaxation of the stretchable layer. Apparatus for practicing the method are also disclosed.Type: GrantFiled: June 29, 1994Date of Patent: December 27, 1994Assignee: Kimberly-Clark CorporationInventors: Anne M. Fahrenkrug, Cathy L. Winters, Nanette J. Logsdon
-
Patent number: 5360507Abstract: A flame resistant to nonflammable composite panel is produced from a nonextrudable core mixture with a pourable, nonflammable filling material and a binder, and on both sides cover strips, flexibly bonded to the core. For a continuous production of the composite panel in one operation, the core mixture is poured onto a flexible lower adhesive film, supported as it runs in, and a pile extending over the entire width forms there. Between the lower adhesive film and a flexible upper adhesive film, likewise supported as it runs in, material of the core mixture is continuously and uniformly drawn through a V gap and compacted there for the first time and calibrated to thickness. The adhesive films containing the precompacted core mixture are adhesively bonded to the continuously fed cover strips.Type: GrantFiled: August 30, 1993Date of Patent: November 1, 1994Assignee: Alusuisse-Lonza Services Ltd.Inventors: Reinhard Schlatter, Rainer Ehrat, Peter Muller, Paul Kubler, Otto Hodl
-
Patent number: 5344516Abstract: A method for forming a skin-contacting topsheet of disposable diaper with an elastic opening, wherein the opening 16 formed in the skin-contacting topsheet of a disposable diaper is elasticized along its whole peripheral edge and reinforced so as to form uniform gathers along the whole peripheral edge.The skin-contacting topsheet comprises a pair of sheet members overlapping side by side and having mutually opposed inner side edges, respectively, which are provided with cutouts so that each pair of mutually opposed cutouts form each opening, then elastic members are provided along halves of the opening's whole peripheral edge and these elastic members are covered with a part of the skin-contacting topsheet.Type: GrantFiled: April 7, 1993Date of Patent: September 6, 1994Assignee: Uni-Charm CorporationInventors: Hiroyuki Tanji, Ichiro Wada, Yoshio Ono, Hiroyuki Soga
-
Patent number: 5340424Abstract: This invention effectively avoids the inconvenience conventially occuring such that, with the pants of prior art being put on the user, the front body is displaced downward under a force exerted thereon as the user's legs move or under a weight of excretions accumulated in the crotch area of the pants, resulting in loosened leg-openings through which leak of excretion may occur.A front body comprising a sheet having elastic stretchability in the transverse direction and a rear body comprising a sheet having no elastic stretchability are bonded to each other with a transverse dimension of the front body in its transversely contracted state being smaller than a transverse dimension of the rear body so that laterally opposite waist sides of the user's body wearing the pants may be covered by a part of the rear body.Type: GrantFiled: December 11, 1992Date of Patent: August 23, 1994Assignee: Uni-Charm CorporationInventor: Michiko Matsushita
-
Patent number: 5330598Abstract: An absorbent garment includes a moisture impervious outer layer, a nonwoven moisture pervious inner layer having an upper waste receiving surface, and an absorbent layer between said inner and outer layers, each of which layers extends between said front and back edges. The garment further includes a pair of overlay strips applied over the upper waste receiving surface with the opposite ends of the strips superimposed. Each overlay strip typically has one substantially straight longitudinal edge and one longitudinal edge with an inset central portion whereby the strips provide an opening to expose a target region in a central portion of the garment body. This superimposition of the strips also forms a pair of end caps for preventing fluid leakage at the garment body front edge and the garment body back edge. A stretchable material is positioned in a stretched condition along the longitudinal edges to urge the overlay strips into contact with the wearer's body.Type: GrantFiled: August 14, 1992Date of Patent: July 19, 1994Assignee: Paragon Trade Brands, Inc.Inventors: Edward P. Erdman, Heinz Pieniak
-
Patent number: 5328536Abstract: Along a plane sealing zone, a number of plastic film webs are sealed together under pressure and heat application. The plastic film webs run at equal or different distances from one another into the sealing zone and are guided over compression rolls. Between the compression rolls, which lie opposite each other in pairs, the plastic film webs are introduced and subjected to both pressure and heat. The plastic film webs are provided on one or both sides with sealing layers, which are incipiently melted by the action of heat, so that a sealing of the plastic film webs in layers one on top of the other occurs in the sealing zone.Type: GrantFiled: October 22, 1993Date of Patent: July 12, 1994Assignee: Hoechst AktiengesellschaftInventors: Sabine Rohleder, Jochen Coutandin
-
Patent number: 5308345Abstract: Disposable diapers are manufactured in a high-speed process with an elastic waistband formed of a stretched length of foam having an elastic memory by longitudinally stretching the elastic waistband length by gripping without penetrating at least one of its ends and fixing the stretched elastic waistband to the diaper layer along the waistband area. The end of the waistband length is positively engaged in a groove on a roller surface with a continuous belt which moves across the grooved roller surface and pinches without penetrating the end of the elastic foam length.Type: GrantFiled: November 28, 1989Date of Patent: May 3, 1994Assignee: John M. TharpeInventor: Robert M. Herrin
-
Patent number: 5300166Abstract: A film is delivered from a delivery roller and another film is delivered from another delivery roller. The two films are introduced between a heater and a receiver. The heater presses the two films against the receiver to bond the films. Then, the rear end of the film is cut off with fusing and the front end of another film is cut off with fusing by wire heaters. The bonded film is transferred through drive and pinch rolls to an accumulator for storing the film and is spread to open slits by holding rolls to form a longitudinal web, which is laminated on a lateral web manufactured in another process to form a reticulate non-woven fabric.Type: GrantFiled: March 18, 1993Date of Patent: April 5, 1994Assignees: Nippon Petrochemicals Co., Ltd., Polymer Processing Research Institute, Ltd.Inventors: Kintaro Aihara, Tadashi Honda, Masashi Kobayashi, Hideyo Rohyama, Kazuhiko Kurihara, Hiroshi Yazawa, Toshikazu Ohishi
-
Patent number: 5296080Abstract: A method and apparatus for applying an elastic waistband to disposable diapers utilizing canted pin-equipped wheels where an elastic patch is applied to the wheels when the wheel peripheries are close together and then stripping the patches from the pins and applying them to a diaper component web when the wheels are further apart.Type: GrantFiled: April 19, 1988Date of Patent: March 22, 1994Assignee: Paper Converting Machine CompanyInventors: John Merkatoris, James Hertel
-
Patent number: 5290377Abstract: An improved method for producing a reticular nonwoven fabric in which the velocity of the transversely stretching line step can be much increased by providing the transversely stretching step with a longitudinally orienting step, thereby accelerating the whole production line. The method of the invention includes the continuous steps of: a first feeding step to feed a first film material; a longitudinally stretching step to stretch the first film material; a splitting step to split the longitudinally the stretched first film material; a laterally spreading step to spread the split film; a second feeding step to feed a second film material; a longitudinally orienting step to orient the second film material; a transversely slitting step to slit the oriented second film material; a transversely stretching step to stretch the slit second film material; and a laminating step to laminate the first film material with the second film material.Type: GrantFiled: July 16, 1991Date of Patent: March 1, 1994Assignees: Nippon Petrochemicals Company, Ltd., Polymer Processing Research Inst. Ltd.Inventors: Kintaro Aihara, Tadashi Honda, Masashi Kobayashi, Hideyo Rohyama, Kazuhiko Kurihara, Hiroshi Yazawa, Toshikazu Ohishi
-
Patent number: 5284540Abstract: An unstretched first plastic foil is laminated with a longitudinally stretched second plastic foil by the application of heat and pressure. The second foil is preheated, thereupon stretched and thereafter tempered prior to being laminated with the first foil which is heated prior to lamination. The laminating step can coincide with the tempering step and immediately follows the stretching step so that the laminating step can be carried out by utilizing heat which is required for stretching of the second foil. The material of the first foil is or can be identical with the material of the second foil; in any event, the two materials are sufficiently compatible to permit bonding of the unstretched foil to the stretched foil by the application of heat and pressure alone, i.e., without resorting to an adhesive.Type: GrantFiled: January 9, 1991Date of Patent: February 8, 1994Assignees: Spohn Verpackungswerke GmbH & Co., Lenzing AG, Spohn Verpackungswerke GmbH & Co.Inventors: Roland Roth, Henning Schick, Johann Bloo, Franz Zacek
-
Patent number: 5275676Abstract: A distinctive method and apparatus for applying an elastic member onto a moving substrate along a selected curvilinear location includes a transporting mechanism for moving the substrate along a selected substrate path. A rotatable nip roll contacts the elastic member to place the elastic member onto the substrate along the curvilinear location. A guiding mechanism delivers the elastic member across a free-span distance directly onto the nip roll while selectively changing a lateral positioning of the elastic member relative to a cross direction of the invention. A conveying mechanism directs the elastic member along a selected elastic path into the guiding mechanism, and an elastic supplying mechanism provides the elastic member to the conveying mechanism. In one aspect of the invention, a bonding mechanism provides an adhesive in an arrangement which secures the elastic member to the substrate along the curvilinear location.Type: GrantFiled: September 18, 1992Date of Patent: January 4, 1994Assignee: Kimberly-Clark CorporationInventors: Jon P. Rooyakkers, Lyle T. Lamers, David J. Van Eperen
-
Patent number: 5259902Abstract: The present invention provides a method for continuously attaching discrete lengths of a tensioned elastic material to predetermined, isolated portions of moving absorbent articles, said absorbent articles having a topsheet, a backsheet, and an absorbent core. A continuous web of backsheet material is fed to an assembly station. An absorbent core is secured to said continuous web of backsheet material. Intermittent portions of a continuous ribbon of elastic material are secured to said backsheet at predetermined discrete locations. A ribbon of elastic material is cut at predetermined locations. The backsheet and the stretched elastic are maintained in a substantially tensioned state. A continuous web of topsheet material is fed to said assembly station. The topsheet web is secured to said backsheet web. The absorbent articles is maintained in a substantially tensioned state. Discrete portions of stiffening material are adhered to said continuous web of wrapper material.Type: GrantFiled: September 4, 1992Date of Patent: November 9, 1993Assignee: The Procter & Gamble CompanyInventor: Delmar R. Muckenfuhs
-
Patent number: 5236539Abstract: An apparatus for laying pre-stretched elastic threads in a curved path on a continuously advancing web of material includes at least one rotatable thread-guide roll. The roll is provided with a peripherally extending curved groove or slot whose axial amplitude controls the positioning of the threads on the web, and achieves the desired curvature of the threads. The apparatus further includes a glue applicator for applying adhesive to the threads. The roll may conveniently have the form of a tube provided with through passing slots for guiding the threads straight through the tube and laying them onto the web.Type: GrantFiled: December 20, 1990Date of Patent: August 17, 1993Inventors: John A. Rogberg, Verner E. Andersen
-
Patent number: 5221390Abstract: The present invention relates to a method for positioning at least one thread, band or like element in a pre-determined pattern above a conveyor path with the aid of thread outfeed device having at least one thread outlet device. In accordance with the invention, the thread outlet, or each thread outlet, is moved in a simple or a composite rotational path in a plane parallel with the conveyor path, and the path is moved linearly in relation to the rotational axis of the thread outlet. This will cause the thread outlet to move in a spiral-like movement path relative to the conveyor path. The conveyor path has mounted thereon dogging elements which are located within the spiral-like movement path of the thread outlet, such as to enable the thread to be laid out in a pattern determined by the dogging elements. The invention also relates to apparatus for carrying out the method.Type: GrantFiled: February 28, 1991Date of Patent: June 22, 1993Assignee: Molnlyke ABInventors: Lennart Persson, Dan Johansson, Leidulf Indrebo
-
Patent number: 5213645Abstract: Here is disclosed a method for efficiently attaching elastic members around leg-holes of a garment such as a disposable diaper or the like without any futile use of material.Elastic members 04A, 04B are fed and bonded onto a web so that the respective elastic members described curves like sine curves with summits and troughs of these curves defining together respective annular elastic areas 16 and thereby a base web is formed. Then the base web is severed into strips 17' bearing thereon the individual annular elastic areas and these strips 17' are intermittently bonded to a web 07 to form a composite web 19. A separate web is bonded onto a top surface of the composite web 19 to form a composite web 20. Finally, the composite web 20 is severed along center lines of the respective annular elastic areas 16 into individual garments.Type: GrantFiled: April 21, 1992Date of Patent: May 25, 1993Assignee: Uni-Charm CorporationInventors: Hironori Nomura, Taiji Shimakawa, Yoshinori Matsura, Hiroki Yamamoto, Hirofumi Ohnishi
-
Patent number: 5190606Abstract: A method and apparatus for producing raised leg cuffs for diapers in which an elastic band is oriented in a straight line direction so as to be adhesively encapsulated between the fold portions of a diaper web while the same is passing through a folding board.Type: GrantFiled: June 14, 1991Date of Patent: March 2, 1993Assignee: Paper Converting Machine CompanyInventors: John R. Merkatoris, William Van Ryzin
-
Patent number: 5171388Abstract: An apparatus and method are disclosed for securing elastic to a flexible backing for use in catamenial pads. The apparatus includes means for feeding the backing sheet onto a first drum having a plurality of surface grooves formed therein. The backing sheet is pulled into each of the grooves such as by a vacuum. A strip of elastic is then placed across each of the grooves and anchored at its respective ends. The backing sheet is then drawn off of the drum and extended so that the elastic is stretched to overlay the backing sheet. The apparatus further includes means for adhering portions of the elastic intermediate the anchored ends to the backing sheet while the elastic is in its extended position. The method for applying the elastic material to the backing sheet uses the apparatus discussed above.Type: GrantFiled: April 6, 1990Date of Patent: December 15, 1992Assignee: Kimberly-Clark Corp.Inventors: John W. Hoffman, Karl R. Dehn
-
Patent number: 5162066Abstract: A method for manufacturing a laminated strip having a gas barrier material laminated in a liquid-tight manner between two external films includes the steps of forming surface irregularities in a first film, laminating a web gas barrier material to the first film, transversely cutting the gas barrier material and applying a second film over the gas barrier material. The apparatus for manufacturing the laminated strip includes a pair of cooperating rolls between which the first film is fed for forming irregularities in the first film. Two other cooperating rolls are provided for cutting the gas barrier member after it has been laminated to the first film. Two additional cooperating rolls are also provided for laminating the second film to the gas barrier material and the first film.Type: GrantFiled: September 1, 1989Date of Patent: November 10, 1992Assignee: AB ProforInventors: Kjell Martensson, Lars Carlsson
-
Patent number: 5147487Abstract: Here is disclosed a method for manufacturing individual disposable underpants provided around a waist line and a pair of leg-holes with elastic members from two continuous webs and a plurality of continuous elastic members, characterized by that the webs are applied on predetermined locations with adhesive so that the elastic members can be reliably held on the webs although the elastic members must be forcibly curved when the elastic members are bonded between the webs with use of adhesive.Type: GrantFiled: August 16, 1991Date of Patent: September 15, 1992Assignee: Uni-Charm CorporationInventors: Hironori Nomura, Taiji Shimakawa, Yoshinori Matsura, Hiroki Yamamoto, Hirofumi Ohnishi
-
Patent number: 5120380Abstract: In the manufacture of an in-line cored pultruded profile, filler is bonded with polyester or methacrylate type resin and enclosed in fiberglass, carbon or aramid fiber cloth. The cloth is preformed to replicate the desired profile shape by means of a pre-die former and the external surface of a hollow duct. Filler is delivered into the interior of the duct by a variable output venturi blower. Precise distribution of packing is effected by the internal configuration of the duct and the creation of a raised moving wall when non-foaming resin is used. Precise configuration of ducts can be achieved by fashioning from reinforced cloth. Adjustable start drums provide time and labor saving benefits. Complete resin wet through using either foaming or non-foaming resin ensures exellent filler bonding and surface finish.Type: GrantFiled: October 17, 1989Date of Patent: June 9, 1992Assignee: Caledonia Composites LimitedInventor: Robert Strachan
-
Patent number: 5091039Abstract: The present invention generally resides in method and apparatus for intermittently applying pieces of elastic band severed into a predetermined length onto a moving continuous web at predetermined positions.Type: GrantFiled: March 26, 1990Date of Patent: February 25, 1992Assignee: Uni-Charm CorporationInventors: Hiroshi Ujimoto, Hironori Nomura, Taiji Shimakawa, Junji Shinohara, Shigetoyo Kobayashi, Hiroki Yamamoto
-
Patent number: 5068000Abstract: A process for the production of bias-oriented reinforcing fabrics for the manufacture of power transmission belts, hoses and the like. The fabric is initially woven on a high speed, flat shuttleless loom, then immersed in a warm liquid solution to soften the sizing. The fabric is then processed to displace one selvedge longitudinally relative to the other, to achieve the desired bias angle of the weft yarns, usually about 120/60.degree. to the warp yarns. After partial drying, and fine adjustment of bias angle in a weft straightener, the fabric is gripped at its selvedges by a clip tenter and retained with the desired bias orientation while being dried. The dry fabric is substantially stabilized in its desired bias orientation. The selvedge edges are then trimmed off hot knives and the trimmed fabric is collected on a roll for shipment to and use by the belt/hose manufacturer, where it is calendered with a rubber compound and banner cut into rhomboid-like sections.Type: GrantFiled: February 27, 1990Date of Patent: November 26, 1991Assignee: West Point Pepperell, Inc.Inventor: Harold L. Lauderdale
-
Patent number: 5066348Abstract: A flannelized film and a method of making a flannelized film are disclosed. Layers of plastic film are fed between two rollers meeting at a nip, the contiguous surfaces of the layers being coated with an adhesive or comprising a heat-softened coextruded layer. A layer of creped tissue comprising cellulosic fibers is laminated between the contiguous surfaces of the layers of plastic film to form an intermediate laminate structure. The cellulosic fibers of the intermediate laminate structure are split at the exit side of the nip such that a portion of the cellulosic fibers is adhered to each plastic layer and has components extending in a direction substantially perpendicular with respect to the plane of the plastic film. This gives the plastic film the look and feel of flannel for improving the aesthetics of disposable absorbent products such as diapers, feminine napkins and underpads.Type: GrantFiled: December 4, 1989Date of Patent: November 19, 1991Assignee: James River CorporationInventor: James H. Manning
-
Patent number: 5064489Abstract: In a method for making disposable absorbent garments, elastic flaps which are brought in close contact around the wearer's legs are formed separately from a topsheet and a backsheet and bonded to the topsheet which is being transferred to an assembly line before the topsheet is placed upon the backsheet.Type: GrantFiled: February 5, 1990Date of Patent: November 12, 1991Assignee: Uni-Charm CorporationInventors: Hiroshi Ujimoto, Hironori Nomura, Toshinori Yamamoto
-
Patent number: 5059265Abstract: The thickness of a biaxially oriented resin film is controlled by reading the thickness distribution of the oriented resin film prior to rolling up thereof and separating the readings into modes by harmonic analysis (Fourier transformation) using a computer. The modes are then divided into modes of a low frequency component and a high frequency components by a predetermined border mode. The deviation is controlled in the profile of the low frequency component by adjusting die bolts as well as controlling the deviation in the profile of the high frequency component by regulating temperatures of a number of heater elements in an oven.Type: GrantFiled: December 27, 1989Date of Patent: October 22, 1991Assignee: Oji Yuka Goseishi Co., Ltd.Inventor: Takaaki Asakura
-
Patent number: 5043036Abstract: A device for stretching the width of strip material including two rotatably mounted circular pulleys having portions of their peripheries at a close spacing at a first location and portions of their peripheries at a larger spacing at a second location. Two flexible belts are mounted for movement along predetermined paths including clamping path portions with portions of the belts and pulleys in engagement from an inlet position adjacent the first location to an outlet position adjacent the second location. Edge portions of the strip material are guided between the belts and the peripheral surfaces at the inlet position and the portion of the strip material extending from the inlet position to the outlet position is clamped to the peripheral surface of the pulley by the belts and is stretched to widen its width as the pulleys rotate during movement of the strip material from the inlet position to the outlet position.Type: GrantFiled: March 30, 1990Date of Patent: August 27, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Douglas A. Swenson
-
Patent number: 5030303Abstract: A method and apparatus is disclosed for forming a disposable garment with a waste containment pocket defined by a pair of barrier cuffs located on opposed sides of the centerline of the body contacting layer of the garment inboard of its elasticized leg openings. Each barrier cuff is formed by applying a pattern of adhesive alongside of an elastic member maintained in tension on the body contacting layer or a separate strip of material, and then intermittently diverting the path of the adhesive pattern such as by a jet of air so that the adhesive contacts and bonds the elastic member to the body contacting layer or separate strip at longitudinally spaced locations therealong. When the tension on the elastic member is released, gathers or folds are formed in the barrier cuff at the locations where the elastic member was adhered thereto which help the garment conform to the shape of the wearer and prevent the passage of body exudates to the elasticized leg openings.Type: GrantFiled: July 28, 1989Date of Patent: July 9, 1991Assignee: Nordson CorporationInventor: Carl C. Cucuzza
-
Patent number: 5030302Abstract: Method for the production of a compound foil as an endless strip, the compound foil to be processed in the form of rectangular blanks covering a width of the endless strip characterized in that two different foil strips, of which a first strip contains an aluminum foil (4) or a paper are drawn through a lamination machine with tractive forces to overcome friction losses in the machine, these tractive forces producing different elongations in said two different foil strips, that one of the endless strips is provided at one side surface with a binding agent over a connecting surface, which consists of several partial areas (3, 13) separated from each other, that the two strips are connected to each other while the both strips being elastically stretched to different elongations as the strips are drawn through the lamination machine whereby after the two foil strips coming back again to their non-stretched starting state, that surfaces of the blanks each have one central area and two margin areas (9, 12) borderiType: GrantFiled: September 27, 1989Date of Patent: July 9, 1991Assignee: Teich AGInventors: Wilfried Jud, Wilhelm Mannertorp, Franz Reiterer, Alfred Gnadenberger
-
Patent number: 5026450Abstract: A method of applying adhesive to the heat shrinkable, waist elastic member of a disposable garment, and for attaching the elastic member to the backing sheet of the gartment, comprises extruding an adhesive bead from an adhesive dispenser and impacting the bead with jets of air directed substantially tangent to the periphery thereof to form an elongated adhesive fiber and to impart a twisting motion to the adhesive fiber. The adhesive fiber is deposited in a spiral pattern onto the heat shrinkable elastic member, preferably at an application temperature which substantially reduces activation of the heat shrinkable elastic member. The elastic member is cut into individual strips which are adhered at longitudinally spaced locations to the material forming the backing sheet of the disposable garment.Type: GrantFiled: October 13, 1989Date of Patent: June 25, 1991Assignee: Nordson CorporationInventors: Carl C. Cucuzza, John M. Raterman, John P. Keuter
-
Patent number: 5000806Abstract: The invention includes a method and apparatus for applying an elastic strand to disposable diapers. It uses canted, spindle-equipped wheels for engaging an elastic strand, moving the elastic strand into a sinuous configuration and stretching the strand. Stripping belts apply the strand to a diaper component.Type: GrantFiled: September 13, 1989Date of Patent: March 19, 1991Assignee: Paper Converting Machine CompanyInventors: John R. Merkatoris, James E. Hertel, Dale E. Zeman
-
Patent number: 4995928Abstract: A carrier strip or filament of cold drawable material is utilized to transport discrete lengths of elastic ribbon within a manufacturing apparatus. The elastic ribbons are extruded onto the carrier strip or around the filament and adhere thereto. The carrier strip and elastic ribbon are jointly stretched a predetermined amount. The stretched carrier strip and stretched elastic ribbon are bonded to a component of a final product, as, for example, the backing sheet of a disposable diaper, wherein the elastic ribbons are employed to elasticize the leg areas. The carrier strips greatly facilitate machine handling relatively short lengths of stretched elastic ribbons without waste. The carrier strips may be transversely guided along a predetermined path to follow the hourglass contour of the margins of a diaper having form fitting legs.Type: GrantFiled: October 31, 1988Date of Patent: February 26, 1991Inventor: Reinhardt N. Sabee
-
Patent number: 4994130Abstract: A method for continuously producing a composite laminate comprising a thermoplastic synthetic resin sheet and an aluminum sheet laminated on each side of the resin sheet, wherein(1) as the thermoplastic resin sheet, a solid sheet is used,(2) as the aluminum sheet, an aluminum sheet having a thermoplastic adhesive layer provided on its surface is used,(3) two such aluminum sheets with the respective adhesive layers facing to each other, with the thermoplastic synthetic resin sheet interposed therebetween, are fed to hot press bonding rollers, and(4) when they are fed to the hot press bonding rollers, (a) a tension of at least 2 kg/mm.sup.2 is exerted to each aluminum sheet, and (b) the thermoplastic adhesive layer provided on the surface of each aluminum sheet is maintained to be in a molten state.Type: GrantFiled: August 17, 1989Date of Patent: February 19, 1991Assignee: Mitsubishi Kasei CorporationInventors: Kunihiko Ichikawa, Kiyoshi Mishima, Kunio Tsukagoshi, Isao Hayatsu, Toshiharu Yamazaki
-
Patent number: 4992125Abstract: This disclosure is directed to an apparatus adapted to cut an elastic member for fitness of opposite side edges around the user's legs into desired lengths and then to successively attach these lengths of the elastic member onto a disposable diaper.Type: GrantFiled: May 9, 1988Date of Patent: February 12, 1991Assignee: Uni-Charm CorporationInventors: Migaku Suzuki, Mitsuzo Ochi, Hironori Nomura, Takamitsu Igaue, Takeshi Kudo
-
Patent number: 4987940Abstract: A device for applying spaced layers generally transversely across an elongate web which defines a through path for the web including parallel inlet and outlet path portions spaced sideways from each other and a transverse path portion between adjacent terminal and beginning ends of the inlet and outlet path portions. The web is moved lengthwise at a predetermined speed in a first direction along the inlet and outlet path portions, the device periodically moves the portion of the web along the transverse path portion generally edgewise in a direction parallel to the first direction and at about the predetermined speed to essentially stop longitudinal movement of the portion of the web along the transverse path portion; and the device applies a layer of material such as tape generally transversely across the portion of the web along the transverse path portion as it moves tangentially by the periphery of a rotating applicator drum.Type: GrantFiled: August 19, 1988Date of Patent: January 29, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: Melvin J. Straub, Edwin Kalash, Douglas A. Swenson